Cannot modify header!

We’re getting these warning messages, too. Following this thread.

Hi @tonygao,

The “Cannot modify header information – headers already sent by” error message typically indicates that something in your PHP code has caused output to be sent before the HTTP headers are fully defined. It’s been linked to another plugin loading WordPress core files out of order in the past, which is a possibility here.

To rule out a plugin or theme conflict, try to run Wordfence as your only enabled plugin and revert to a default theme such as Twenty Twenty-Four. If you no longer see the error, re-enable your plugins and theme one-by-one until it recurs again to help find the cause.

Thanks,
Margaret